 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal;

 import org.eclipse.core.commands.common.EventManager;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.jface.util.SafeRunnable;
 import org.eclipse.ui.IPartListener2;
 import org.eclipse.ui.IWorkbenchPartReference;
 import org.eclipse.ui.internal.misc.UIStats;

 /**
  * Part listener list.
  */
 public class PartListenerList2 extends EventManager {

     /**
      * PartListenerList2 constructor comment.
      */
     public PartListenerList2() {
         super();
     }

     /**
      * Adds an PartListener to the part service.
      */
     public void addPartListener(IPartListener2 l) {
         addListenerObject(l);
     }

     /**
      * Calls a part listener with associated performance event instrumentation
      *
      * @param runnable
      * @param listener
      * @param ref
      * @param string
      */
     private void fireEvent(SafeRunnable runnable, IPartListener2 listener, IWorkbenchPartReference ref, String string) {
         String label = null;//for debugging
 if (UIStats.isDebugging(UIStats.NOTIFY_PART_LISTENERS)) {
             label = string + ref.getTitle();
             UIStats.start(UIStats.NOTIFY_PART_LISTENERS, label);
         }
         Platform.run(runnable);
         if (UIStats.isDebugging(UIStats.NOTIFY_PART_LISTENERS)) {
             UIStats.end(UIStats.NOTIFY_PART_LISTENERS, listener, label);
         }
     }

     /**
      * Notifies the listener that a part has been activated.
      */
     public void firePartActivated(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l = (IPartListener2) array[i];
             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partActivated(ref);
                 }
             }, l, ref, "activated::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been brought to top.
      */
     public void firePartBroughtToTop(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l = (IPartListener2) array[i];
             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partBroughtToTop(ref);
                 }
             }, l, ref, "broughtToTop::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been closed
      */
     public void firePartClosed(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l = (IPartListener2) array[i];
             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partClosed(ref);
                 }
             }, l, ref, "closed::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been deactivated.
      */
     public void firePartDeactivated(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l = (IPartListener2) array[i];
             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partDeactivated(ref);
                 }
             }, l, ref, "deactivated::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been opened.
      */
     public void firePartOpened(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l = (IPartListener2) array[i];
             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partOpened(ref);
                 }
             }, l, ref, "opened::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been opened.
      */
     public void firePartHidden(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l;
             if (array[i] instanceof IPartListener2) {
                 l = (IPartListener2) array[i];
             } else {
                 continue;
             }

             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partHidden(ref);
                 }
             }, l, ref, "hidden::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been opened.
      */
     public void firePartVisible(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l;
             if (array[i] instanceof IPartListener2) {
                 l = (IPartListener2) array[i];
             } else {
                 continue;
             }

             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partVisible(ref);
                 }
             }, l, ref, "visible::"); //$NON-NLS-1$
 }
     }

     /**
      * Notifies the listener that a part has been opened.
      */
     public void firePartInputChanged(final IWorkbenchPartReference ref) {
         Object [] array = getListeners();
         for (int i = 0; i < array.length; i++) {
             final IPartListener2 l;
             if (array[i] instanceof IPartListener2) {
                 l = (IPartListener2) array[i];
             } else {
                 continue;
             }

             fireEvent(new SafeRunnable() {
                 public void run() {
                     l.partInputChanged(ref);
                 }
             }, l, ref, "inputChanged::"); //$NON-NLS-1$
 }
     }
     
     /**
      * Removes an IPartListener from the part service.
      */
     public void removePartListener(IPartListener2 l) {
         removeListenerObject(l);
     }
 }

